Organic Functionalized Nano-Fe3O4 Hybrid Inhibitor for Enhancing the Anticorrosion Performance of Carbon Steel

Abstract

Development of novel corrosion inhibitors is important for improving the anticorrosion of carbon steel because the serious carbon steel corrosion causes enormous economic losses to humankind. In this work, we demonstrated the novel organic functionalized Fe₃O₄ hybrid inhibitor for enhancing the anticorrosion performance of carbon steel. For this purpose, amino-Fe₃O₄ nano-spheres (NH2–Fe₃O₄) were prepared via solvothermal route, using FeCl₃.6H₂O as an iron source and 3-aminophenoxy-phthalonitrile as precursor. Then, the N,N-diethyl-3-amine methyl propionate (DM) was reacted with amino-Fe₃O₄ nano-spheres to produce the organic functionalized nano-Fe₃O₄ hybrid. The chemical composition and micro-structure of as-obtained organic functionalized Fe₃O₄ hybrid were characterized and confirmed by Fourier transform infrared, X-ray diffraction, and scanning electron microscopy. Furthermore, the anticorrosion performance of carbon steel by addition of organic functionalized nano-Fe₃O₄ inhibitor was investigated by AC impedance measurements and polarization curves. The research results showed that the organic functionalized nano-Fe₃O₄ exhibited enhanced inhibition effect for carbon steel, which can be used as a new type of carbon steel corrosion inhibitor.